납프리 땜납용 플럭스와 납땜 방법
    2.
    发明公开
    납프리 땜납용 플럭스와 납땜 방법 有权
    无铅焊接的焊剂和焊接方法

    公开(公告)号:KR1020090088359A

    公开(公告)日:2009-08-19

    申请号:KR1020097008829

    申请日:2007-12-12

    Abstract: A flux for soldering which can prevent the development of whiskers which is apt to occur when electronic parts are soldered to a printed wiring board with a lead-free solder (e.g., Sn-3.0Ag-0.5Cu) having a higher tin content and a higher melting point than eutectic solders. The flux is suitable for use as a non-cleaning type post flux in flow soldering. The flux contains at least one compound selected among acid phosphoric acid esters and derivatives thereof in an amount of 0.2-4 mass%, besides a rosin as a main-ingredient resin and an activator. By conducting soldering in a nitrogenous atmosphere, whisker development is more effectively prevented. ® KIPO & WIPO 2009

    Abstract translation: 一种用于焊接的焊剂,其可以防止当使用具有较高锡含量的无铅焊料(例如,Sn-3.0Ag-0.5Cu)将电子部件焊接到印刷线路板时易于发生的晶须的显影, 比共熔焊料熔点高。 焊剂适用于流动焊接中的非清洗型焊剂。 焊剂含有至少一种选自酸性磷酸酯及其衍生物的化合物,其量为0.2-4质量%,除了松香作为主要成分树脂和活化剂。 通过在含氮气氛中进行焊接,可以更有效地防止晶须发展。 ®KIPO&WIPO 2009

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